Electrode assembly

Abstract

The utility model provides a kind of electrode assembly, which comprises a power supply, a first electrode sheet, a second electrode sheet, a first control unit and a third electrode sheet. The first electrode sheet has an oxygen evolution catalytic coating on its surface, and the third electrode sheet has a chlorine evolution catalytic coating on its surface. The first electrode sheet and the third electrode sheet are connected to one pole of the power supply alternately through the first control unit with a first period; the second electrode sheet is connected to the other pole of the power supply and can form an electrolysis loop with the first two, respectively. With the first control unit alternatingly conducting, the electrode assembly can realize different electrochemical reactions in the same device, meet various application requirements, and generate ozone water and hypochlorous acid disinfectant, respectively.

Description

Technical Field

[0001] This utility model relates to the technical field of water electrolysis devices, and in particular to an electrode assembly. Background Technology

[0002] Currently, existing water electrolysis devices are prone to scale buildup on the cathode surface due to adsorption, leading to electrode failure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect of scale formation in the electrode assembly in the prior art, and to provide an electrode assembly.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] The positive and progressive effects of this utility model are as follows:

[0006] This utility model provides an electrode assembly, which includes a power source, a first electrode plate, and a second electrode plate. The surface of the first electrode plate is provided with an oxygen evolution catalytic coating. The electrode assembly also includes a first control unit and a third electrode plate. The surface of the third electrode plate is provided with a chlorine evolution catalytic coating. The first electrode plate and the third electrode plate can be alternately connected to one pole of the power source through the first control unit in a first cycle. The second electrode plate is connected to the other pole of the power source to form an electrolysis circuit with the first electrode plate and the third electrode plate respectively.

[0007] By alternately switching on the first control unit, different electrochemical reactions can be achieved in the same electrode assembly to meet different application requirements. The first electrode plate and the third electrode plate can each form an electrolytic circuit with the second electrode plate to generate ozone water and hypochlorous acid disinfectant, respectively.

[0008] Preferably, the electrode assembly further includes a second control unit electrically connected to the electrolysis circuit. The second control unit is configured to switch the polarity of the first electrode plate, the third electrode plate, and the second electrode plate between a first state and a second state in a second cycle. In the first state, the first electrode plate or the third electrode plate is connected to the positive terminal of the power supply, and the second electrode plate is connected to the negative terminal of the power supply. In the second state, the first electrode plate or the third electrode plate is connected to the negative terminal of the power supply, and the second electrode plate is connected to the positive terminal of the power supply.

[0009] The second control unit switches the polarity relationship of the electrode assembly in a second cycle, so that the second electrode plate switches between the anode and cathode in a second cycle, thereby inhibiting and eliminating the formation of scale on the cathode.

[0010] Preferably, the electrode assembly includes a housing, and the first electrode plate, the second electrode plate, and the third electrode plate are all located inside the housing.

[0011] The first, second, and third electrode plates are located inside the outer casing and are in full contact with the water flow to carry out electrochemical reactions.

[0012] Preferably, the housing includes a matching fluid channel structure and a sealing cover. The fluid channel structure has an inlet, an assembly port, and an outlet. The inlet and assembly port are respectively located at the two axial ends of the fluid channel structure. The sealing cover is assembled to the assembly port of the fluid channel structure, and the outlet is located below the outer peripheral surface of the fluid channel structure.

[0013] The inlet and assembly port are respectively located at the axial ends of the fluid channel structure. This facilitates the alignment of the electrode extension direction with the water inlet direction, avoiding electrode bending and thus reducing manufacturing costs. The outlet is located below the outer circumference of the fluid channel structure, allowing water to be discharged using its own gravity.

[0014] Preferably, the sealing cap has a boss structure at the joint with the assembly port, and the assembly port has a recess structure that matches the boss structure.

[0015] The precise fit between the boss and recessed structures creates a physical seal at their contact area. These structures act like barriers along the sealing path, thus enhancing sealing performance.

[0016] Preferably, the electrode assembly further includes extension structures that are electrically connected to the first electrode sheet, the second electrode sheet, and the third electrode sheet respectively. One end of each extension structure is connected to the corresponding electrode sheet and extends to the outside of the housing. The other side of the extension structure is connected to the power supply. An insulating seal is provided between the portion of the extension structure that passes through the housing and the housing.

[0017] The extended structure is electrically connected to the electrode sheet and to the power supply outside the housing, eliminating the need to place the power supply inside the housing and avoiding short circuits.

[0018] Preferably, the electrode assembly further includes fasteners, and the sealing cap and the fluid channel structure are respectively provided with ear structures with mounting holes, and the fasteners are engaged through the mounting holes.

[0019] The mounting holes on the ear structure can serve as a positioning reference during installation, making it easy for assemblers to quickly align the sealing cap with the fluid channel structure, ensuring accurate relative positions of the two, which is beneficial for the smooth progress of subsequent assembly work and improves assembly efficiency.

[0020] Preferably, the substrate of the first electrode sheet and / or the second electrode sheet and / or the third electrode sheet is a titanium plate.

[0021] A dense oxide film easily forms on the surface of titanium, which can resist the erosion of electrolytes with high ion concentrations, avoid the electrode structure from being damaged or contaminated by electrolyte corrosion, and thus extend the service life of the electrode assembly.

[0022] Preferably, the first electrode sheet and / or the second electrode sheet and / or the third electrode sheet have a porous structure.

[0023] The porous structure provides several times more reaction sites for electrochemical reactions, which means that at the same current density, the overall reaction rate is faster and a higher concentration of disinfectant components can be generated per unit time, greatly improving electrolysis efficiency.

[0024] Preferably, the first electrode sheet and the third electrode sheet are arranged symmetrically and parallel to each other on both sides of the second electrode sheet.

[0025] This parallel and symmetrical layout creates a regular and smooth channel for water flow, allowing the water to flow smoothly and continuously through the first, second, and third electrode plates in sequence, ensuring that the water can fully contact the electrodes and maximizing the utilization of the reaction area of ​​each electrode.

[0026] The significant advantages of this invention are as follows: By alternately switching the first control unit on and off, different electrochemical reactions can be achieved within the same electrode assembly, meeting diverse application requirements. Both the first and third electrode plates can form electrolytic circuits with the second electrode plate, respectively generating ozone water and hypochlorous acid disinfectant. Furthermore, the second control unit switches the polarity of the electrode assembly in a second cycle, causing the second electrode plate to switch between anode and cathode in a second cycle, thereby inhibiting and eliminating scale formation on the cathode. Attached Figure Description

[0027] Figure 1 This is a front view of an electrode assembly according to an embodiment of the present invention.

[0028] Figure 2 This is a three-dimensional schematic diagram of an electrode assembly according to an embodiment of the present invention.

[0029] Figure 3 This is a three-dimensional schematic diagram of the electrode sheet and the extension structure according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] Electrode assembly 1

[0032] Power supply 10

[0033] Positive electrode 11

[0034] Negative electrode 12

[0035] First electrode plate 20

[0036] Second electrode plate 30

[0037] Third electrode plate 40

[0038] Control component 50

[0039] 60 shell

[0040] Fluid channel structure 61

[0041] Inlet 610

[0042] Assembly port 611

[0043] Outlet 612

[0044] Sealing cap 62

[0045] 621 Boss structure

[0046] Concave structure 622

[0047] Ear structure 63

[0048] Mounting hole 630

[0049] Extension structure 70 Detailed Implementation

[0050] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0051] like Figures 1-3 As shown, this utility model provides an electrode assembly 1, which includes a power supply 10, a first electrode 20, a second electrode 30, a third electrode 40, and a control assembly 50. The control assembly 50 includes a first control unit. The surface of the first electrode 20 is provided with an oxygen evolution catalytic coating, and the surface of the third electrode 40 is provided with a chlorine evolution catalytic coating. The first electrode 20 and the third electrode 40 can be alternately connected to one pole of the power supply 10 through the first control unit at a first cycle (specifically 1 minute). The second electrode 30 is connected to the other pole of the power supply 10 to form an electrolysis circuit with the first electrode 20 and the third electrode 40 respectively.

[0052] In this embodiment, by alternately activating the first electrode plate 20 and the third electrode plate 40 by the first control unit, different electrochemical reactions can be achieved in the same electrode assembly 1 to meet different application requirements. The first electrode plate 20 and the third electrode plate 40 can each form an electrolytic circuit with the second electrode plate 30 to generate ozone water and hypochlorous acid disinfectant, respectively.

[0053] like Figures 1-3As shown, the control component 50 of the electrode assembly 1 also includes a second control unit. The second control unit is electrically connected to the electrolysis circuit. The second control unit is configured to switch the polarity of the first electrode plate 20, the third electrode plate 40, and the second electrode plate 30 between a first state and a second state at a second cycle (specifically 10 minutes). In the first state, the first electrode plate 20 or the third electrode plate 40 is connected to the positive terminal 11 of the power supply 10, and the second electrode plate 30 is connected to the negative terminal 12 of the power supply 10. In the second state, the first electrode plate 20 or the third electrode plate 40 is connected to the negative terminal 12 of the power supply, and the second electrode plate 30 is connected to the positive terminal 11 of the power supply 10. Within a specific second cycle (10 min): the first electrode 20 is connected to the positive electrode 11, and the second electrode 30 is connected to the negative electrode 12; after the first cycle (1 min) has elapsed, the third electrode 40 is connected to the positive electrode 11, and the second electrode 30 is connected to the negative electrode 12; within this second cycle (10 min), the first electrode 20 and the third electrode 40 are alternately connected to the positive electrode 11 according to the first cycle. In the subsequent second second cycle: the first electrode 20 is connected to the negative electrode 12, and the second electrode 30 is connected to the positive electrode 11; after the first cycle (1 min) has elapsed, the third electrode 40 is connected to the negative electrode 12, and the second electrode 30 is connected to the positive electrode 11; within this second cycle, the first electrode 20 and the third electrode 40 are alternately connected to the negative electrode 12 according to the first cycle.

[0054] In this embodiment, the second control unit switches the polarity relationship of the electrode assembly 1 in a second cycle, causing the second electrode plate 30 to switch between the anode and cathode in a second cycle, thereby suppressing and eliminating the formation of scale on the cathode. In this embodiment, the control assembly 50 includes two H-bridge circuits (a first H-bridge circuit and a second H-bridge circuit), a microcontroller, and an automatic selection switch. The power input terminals of the first H-bridge circuit and the second H-bridge circuit are connected in parallel to the two poles of the power supply 10. The first H-bridge circuit is connected to the first electrode plate 20 and the third electrode plate 40 respectively through the automatic selection switch. The microcontroller can command the automatic selection switch to alternately connect the first electrode plate 20 and the third electrode plate 40, thereby realizing the function of the first control unit. At the same time, the first H-bridge circuit can alternately output positive and negative terminals. The second control unit includes a second H-bridge circuit, which is directly connected to the second electrode plate 30. The microcontroller can control the second electrode plate 30 to connect to the positive or negative terminal, thereby realizing the function of the second control unit. During the first 10 minutes, the second H-bridge circuit connects the second electrode 30 to the negative terminal, while the first H-bridge circuit outputs the positive terminal. During the next 10 minutes, the second H-bridge circuit connects the second electrode 30 to the positive terminal, while the first H-bridge circuit outputs the negative terminal. Within this specific 10-minute period, the microcontroller controls an automatic selection switch to alternately output the current from the first H-bridge circuit through the first electrode 20 and the third electrode 40 in a 1-minute cycle. Of course, in other embodiments, the functions of the first and second control units can also be achieved by setting relays or other electrical connection structures. This part is prior art and will not be elaborated here.

[0055] like Figures 1-3 As shown, the electrode assembly 1 includes a housing 60, and the first electrode plate 20, the second electrode plate 30 and the third electrode plate 40 are all located inside the housing 60.

[0056] In this embodiment, the first electrode plate 20, the second electrode plate 30 and the third electrode plate 40 are located inside the outer casing 60 and are in full contact with the water flow to carry out electrochemical reactions.

[0057] like Figures 1-3 As shown, the outer casing 60 includes a matching fluid channel structure 61 and a sealing cover 62. The fluid channel structure 61 has an inlet 610, an assembly port 611 and an outlet 612. The inlet 610 and the assembly port 611 are respectively located at the two axial ends of the fluid channel structure 61. The sealing cover 62 is assembled to the assembly port 611 of the fluid channel structure 61, and the outlet 612 is located below the outer peripheral surface of the fluid channel structure 61.

[0058] In this embodiment, the inlet 610 and the assembly port 611 are respectively located at both ends of the axial direction of the fluid channel structure 61. This facilitates the alignment of the electrode extension direction with the water inlet direction, avoiding electrode bending and thus reducing manufacturing costs. The outlet 612 is located below the outer circumferential surface of the fluid channel structure 61, allowing water to be discharged using its own gravity.

[0059] like Figures 1-3 As shown, the sealing cover 62 has a boss structure 621 at the joint with the assembly port 611, and the assembly port 611 has a recessed structure 622 that matches the boss structure 621.

[0060] In this embodiment, the precise fit between the boss structure 621 and the recessed structure 622 creates a physical sealing interface at their contact area. The boss structure 621 and the recessed structure 622 act as barriers along the sealing path, thereby enhancing the sealing performance.

[0061] like Figures 1-3 As shown, the electrode assembly 1 also includes an extension structure 70 that is electrically connected to the first electrode sheet 20, the second electrode sheet 30 and the third electrode sheet 40 respectively. One end of each extension structure 70 is connected to the corresponding electrode sheet and extends to the outside of the housing 60. The other side of the extension structure 70 is connected to the power supply 10. An insulating seal is provided between the part of the extension structure 70 that passes through the housing 60 and the housing 60.

[0062] In this embodiment, the extension structure 70 is electrically connected to the electrode sheet and to the power supply 10 outside the housing 60, thus avoiding the need to place the power supply 10 inside the housing 60 and thus preventing short circuits.

[0063] like Figures 1-3 As shown, the electrode assembly 1 also includes fasteners, and the sealing cover 62 and the fluid channel structure 61 are respectively provided with ear structures 63 with mounting holes 630, and the fasteners are engaged through the mounting holes 630.

[0064] In this embodiment, the mounting hole 630 on the ear structure 63 can serve as a positioning reference during installation, making it easy for assemblers to quickly align the sealing cover 62 with the fluid channel structure 61, ensuring that the relative positions of the two are accurate, which is conducive to the smooth progress of subsequent assembly work and improves assembly efficiency.

[0065] like Figures 1-3 As shown, the substrates of the first electrode sheet 20, the second electrode sheet 30, and the third electrode sheet 40 are titanium plates.

[0066] In this embodiment, a dense oxide film is easily formed on the titanium surface, which can resist the erosion of electrolyte with high ion concentration, avoid the substrate being corroded by electrolyte leading to electrode structure damage or ion contamination, thereby extending the service life of electrode assembly 1.

[0067] like Figures 1-3 As shown, the first electrode plate 20, the second electrode plate 30, and the third electrode plate 40 have a porous structure.

[0068] In this embodiment, the porous structure provides several times more reaction sites for the electrochemical reaction, which means that at the same current density, the overall reaction rate is faster and a higher concentration of disinfectant components can be generated per unit time, greatly improving the electrolysis efficiency.

[0069] like Figures 1-3 As shown, the first electrode plate 20 and the third electrode plate 40 are arranged symmetrically and parallel to each other on both sides of the second electrode plate 30.

[0070] In this embodiment, the parallel and symmetrical layout creates a regular and smooth channel for water flow, which can flow smoothly and continuously through the first electrode plate 20, the second electrode plate 30 and the third electrode plate 40 in sequence, ensuring that the water flow and the electrodes can make full contact and maximizing the utilization of the reaction area of ​​each electrode.

[0071] In this embodiment, the electrode assembly 1 can be controlled by a voice module (not shown in the figure), which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the control component controls the electrode assembly 1 to perform corresponding operations, thereby realizing intelligent control of the electrode assembly 1 and improving the user experience.

[0072] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An electrode assembly comprising a power source, a first electrode plate, and a second electrode plate, wherein the surface of the first electrode plate is provided with an oxygen evolution catalytic coating, characterized in that, The electrode assembly further includes a first control unit and a third electrode plate. The surface of the third electrode plate is provided with a chlorine evolution catalytic coating. The first electrode plate and the third electrode plate can be alternately connected to one pole of the power supply through the first control unit in a first cycle. The second electrode plate is connected to the other pole of the power supply to form an electrolysis circuit with the first electrode plate and the third electrode plate respectively.

2. The electrode assembly as described in claim 1, characterized in that, The electrode assembly further includes a second control unit electrically connected to the electrolysis circuit. The second control unit is configured to switch the polarity of the first electrode plate, the third electrode plate, and the second electrode plate between a first state and a second state in a second cycle. In the first state, the first electrode plate or the third electrode plate is connected to the positive terminal of the power supply, and the second electrode plate is connected to the negative terminal of the power supply. In the second state, the first electrode plate or the third electrode plate is connected to the negative terminal of the power supply, and the second electrode plate is connected to the positive terminal of the power supply.

3. The electrode assembly as described in claim 1, characterized in that, The electrode assembly includes a housing, and the first electrode plate, the second electrode plate, and the third electrode plate are all located inside the housing.

4. The electrode assembly as described in claim 3, characterized in that, The housing includes a matching fluid channel structure and a sealing cover. The fluid channel structure has an inlet, an assembly port, and an outlet. The inlet and assembly port are respectively located at the two axial ends of the fluid channel structure. The sealing cover is assembled to the assembly port of the fluid channel structure, and the outlet is located below the outer peripheral surface of the fluid channel structure.

5. The electrode assembly as described in claim 4, characterized in that, The sealing cap has a boss structure at the joint with the assembly port, and the assembly port has a recess structure that matches the boss structure.

6. The electrode assembly as claimed in claim 4, characterized in that, The electrode assembly further includes extension structures that are electrically connected to the first electrode sheet, the second electrode sheet, and the third electrode sheet respectively. One end of each extension structure is connected to the corresponding electrode sheet and extends to the outside of the housing. The other side of the extension structure is connected to the power supply. An insulating seal is provided between the portion of the extension structure that passes through the housing and the housing.

7. The electrode assembly as claimed in claim 4, characterized in that, The electrode assembly also includes fasteners, and the sealing cap and the fluid channel structure are respectively provided with ear structures with mounting holes, and the fasteners are engaged through the mounting holes.

8. The electrode assembly as claimed in claim 1, characterized in that, The substrate of the first electrode sheet and / or the second electrode sheet and / or the third electrode sheet is a titanium plate.

9. The electrode assembly as claimed in claim 1, characterized in that, The first electrode sheet and / or the second electrode sheet and / or the third electrode sheet have a porous structure.

10. The electrode assembly as claimed in claim 1, characterized in that, The first electrode sheet and the third electrode sheet are arranged symmetrically and parallel to each other on both sides of the second electrode sheet.

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